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Finding the Third Proportional to 439.50 and 736.50

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Solution

The third proportional to 439.50 and 736.50 is: 1,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.50 : 736.50 = 736.50 : x
  2. Step 2: Convert to fraction form
    439.50/736.50 = 736.50/x
  3. Step 3: Cross multiply
    439.50x = 736.50 × 736.50
  4. Step 4: Simplify right side
    439.50x = 542,432.25
  5. Step 5: Solve for x
    x = 542,432.25/439.50
  6. Step 6: Final answer
    x = 1,234.20

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Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.